Local sorority Sigma Iota, whose name means "sum of little parts," was founded in 1977. Established in 1960, Oakland encourages new ideas and new organizations. So, with the help of Beta Eta members from the University of Michigan, the chapter was colonized in Spring 1980 and installed as the first NPC sorority at Oakland. The chapter initiated two pledge groups totaling 57 members. At that time, the majority of sisters resided in Hamlin Dormitory; however in 1983, as Oakland is primarily a commuter campus, office arrangements were made in the Oakland Center and that space is now the campus nucleus for Zeta Upsilon. The chapter was the first Greek organization to set up such office space, but others since followed. Jodi Sheridan-DiMichele and Lisa Tyrrell have been long-serving alumnae. The chapter acquired a university-owned home on a former estate in 2004.